Mana Echoes [Onslaught] World Magic Cup Qualifiers Set: Commander 2011 Type: Enchantment

Set: Commander 2011 Type: Enchantment Rarity: Rare Cost: {3}{R} Your opponents can't search libraries

but I knew it weren't no ordinary hunk o' rock

each opponent loses life equal to the number of tapped creatures you control

then draws seven cards

Mana Echoes [Onslaught] World Magic Cup Qualifiers Set: Commander 2011 Type: EnchantmentSet: Onslaught Type: Enchantment Rarity: Rare Cost: {2}{R}{R} Whenever a creature enters the battlefield, you may add an amount of {C} equal to the number of creatures you control that share a creature type with it. When the ground is saturated with mana, even the lightest footstep can bring it to the surface.